A combined cryptosystem with symmetric keys for encrypting messages is proposed. Its unique feature is the use of functions of a real variable as keys instead of natural numbers. Eight key functions ...

Multiplying Using a Sum in Oracle. The "Sum" function in Oracle allows you to add up all data from a specified column and displays a result in your query results. You can use the multiple feature ...

Alumina is one of the most abundant oxides in nature. Hence, the molecular-level elucidation of the alumina/water interface is important not only for a fundamental understanding of the oxide surface, ...

Then, the important characteristics regarding the proposed novel structure are discussed. The design problem of 2-D recursive digital filters using the novel structure is considered. We formulate the ...